Switch mounting



Dec. 11, 1928. 1,695,260

W. R. WALKER SWITCH MOUNTI NG Filed Oct. 1, 1924 INVENTOR HIS ATTORNEY Patented Dec. 11, 1928.

UNITED STATES- laa'lnla'r OFFICE.

WARREN a. WALKER, or NEW nonr, NEW Yonx, sssIGNoR 'ro COOPER HEWITT ELEC- rnro COMPANY, or HOIBOKEN, NEW JERSEY, a oonronATIoN OF NEW JEEsEY.

SWITCH HOUN TING.

Application filed October 1,

My present invention relates to electric switches of the liquid flow type and particularly to a mercury switch having a sealed vitreous envelope and to a means for supportingnnd for protecting the envelope and for making electrical connections to the switch terminal.

It is an object of my invention to prov de a mounting bar for a mercury switch which bar acts as a protecting means for the glass of the switch, as a means for pivotally or otherwise mounting the switch, and as a means for supporting the switch electrode connecting terminals. I

It is a further object of my invention to provide connecting terminals for the switch which serve also as a means for mounting the switch envelo e to the mounting bar.

It is also an ob ect of my invention to pro vide means for further protecting the switch envelope and its parts.

Further objects of my lnventlon will appear from the specification and drawings.

In the drawings which form a part of thls application Fig. 1, is a front elevation. view of the switch bar unit of In invention, in WlllOh the terminal stra s 0 the switch are employed for mounting the switch to the bar by means of studs and nuts which are used also for binding posts for suitable leads to the switch unit,

Fig. 2, is a similar view of the device of Fig. 1, provided with a tubular protecting jacket about the switch envelope whlch 1s held in its osition thereon by being held against the Bar by the terminal straps.

Fig. 3, is a sectional viewalong the line 33 looking in the direction of the arrows, and v velope 5 the caps 6, 6 make electrical contact between the electrodes 7 and thereof and their respective straps 4, 4 which latter are brazing, or Welding. The nuts and washers Fig. 4, is a perspective view of the envelope I connected to said caps 6, 6 as by soldering,

1924. Serial No. 741,081.

9, 9 and 10, 10 serve for making electrical contacts from suitable leads. y

In Figs. 2 and 3 are shown a acket 14 protecting sleeve 14 mounted about the envelope 5 and held between said envelope and said bar 1 by means of the said straps 4, 4. At one end the tubular jacket has been cut transversely and longitudinally to form the de-- pending guards 15-15 which extend downwardly on either side of the bulb 10 of the envelope 5. A slot 17 is provided in the upper part of the jacket for the sealbfi tip 18 of envelope 5, the counterbore "19 being formed in bar 1 for the positioning of said seal off therein. Fig. 4 shows the jacket 14 separated from the switch unit and shows details of the guards 15 and said slot 17.

In the use and operation of my invention mechanical connection is made by bar 1 to sultable mounting means and to tilting or shifting means for causing movement of the mercury in the switch for the opening and closing of the circuit therethrough. A method an means of mounting and using and op crating the switch-bar unit of my invention thereof and mounted to said screws to hold said envelope to said bar, nuts and washerson said screws for holding said straps and for oonnectin lineleads thereto.

2. A switc unit comprising a mercury switch having a vitreous envelope and electrodes sealed therethrough, a bar of insulating material coextensive longitudinally with said envelope, screw studs in the ends of said bar, straps mounted to the ends of said envelope, electrically connected to the leads thereof and mounted to said screws to hold said envelope to said bar, nuts and washers on said screws for holding said straps and for 

